Title:
FORWARD OSMOSIS MEMBRANE, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/165840
Kind Code:
A1
Abstract:
A forward osmosis membrane, and a preparation method therefor. A sacrificial layer is used, in combination with a casting method, for preparing a bottom macroporous polysulfone supporting layer; then an ultraviolet grafting method is used for grafting a hydrophilic PSMP polymer onto the bottom and pore internal walls of the supporting layer; and finally, an interfacial polymerization method is used for preparing an active skin layer on the top of the polysulfone supporting layer so as to obtain a forward osmosis membrane. According to the method, ultraviolet grafting of a hydrophilic PSMP polymer is used for implementing hydrophilic modification on the bottom and pore internal walls of a macroporous polysulfone supporting layer, so that the stability of an active skin layer is maintained, and the permeability performance of a forward osmosis membrane is further improved.
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Inventors:
LIU CHANGKUN (CN)
WANG LIN (CN)
WANG LIN (CN)
Application Number:
PCT/CN2018/124702
Publication Date:
September 06, 2019
Filing Date:
December 28, 2018
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
B01D69/10; B01D67/00
Domestic Patent References:
| WO2017091645A1 | 2017-06-01 |
Foreign References:
| CN108479395A | 2018-09-04 | |||
| CN102574071A | 2012-07-11 | |||
| CN105617885A | 2016-06-01 | |||
| CN105854630A | 2016-08-17 | |||
| CN105032201A | 2015-11-11 |
Attorney, Agent or Firm:
JOHNSON INTELLECTUAL PROPERTY AGENCY (SHENZHEN) (CN)
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